A method of, and apparatus for, retrieval of information from an optical medium, and optical media.

摘要

Digital data, for a computer or similar device, is encoded onto photographic film, paper, or other flat medium to be read optically by a data reader. The data reader may also read analogue data (such as pictures) in digital form. The data is stored in two-dimensional format, and read back by a point or one-dimensional scanner. The medium may typically be in the form of a strip, roll, card, disc or cassette.